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Towards the N_f=2 deconfinement transition temperature with O(a) improved Wilson fermions
High Energy Physics - Lattice · Submitted 12 Aug 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Here we report on an ongoing study of the transition, using two degenerate flavours of nonperturbatively $\Ord(a)$ improved Wilson fermions.
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The abstract, sentence by sentence
A lot of effort in lattice simulations over the last years has been devoted to studies of the QCD deconfinement transition. Most state-of-the-art simulations use rooted staggered fermions, while Wilson fermions are affected by large systematic uncertainties, such as coarse lattices or heavy sea quarks. Here we report on an ongoing study of the transition, using two degenerate flavours of nonperturbatively $\Ord(a)$ improved Wilson fermions. We start with $N_{t}=12$ and 16 lattices and pion masses of 600 to 450 MeV, aiming at chiral and continuum limits with light quarks.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | A lot of effort in lattice simulations over the last years has been devoted to studies of the QCD deconfinement transition. | background 1.00 | 0.06 | 0.02 | asserted 0.99 |
| s1 | Most state-of-the-art simulations use rooted staggered fermions, while Wilson fermions are affected by large systematic uncertainties, such as coarse lattices or heavy sea quarks. | background 0.90 | 0.05 | 0.03 | asserted 1.00 |
| s2 | Here we report on an ongoing study of the transition, using two degenerate flavours of nonperturbatively $\Ord(a)$ improved Wilson fermions. | contribution 0.94 | 0.91 | 0.07 | asserted 0.96 |
| s3 | We start with $N_{t}=12$ and 16 lattices and pion masses of 600 to 450 MeV, aiming at chiral and continuum limits with light quarks. | method 0.98 | 0.85 | 0.05 | asserted 0.84 |
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The paper
Original abstract
A lot of effort in lattice simulations over the last years has been devoted to studies of the QCD deconfinement transition. Most state-of-the-art simulations use rooted staggered fermions, while Wilson fermions are affected by large systematic uncertainties, such as coarse lattices or heavy sea quarks. Here we report on an ongoing study of the transition, using two degenerate flavours of nonperturbatively $\Ord(a)$ improved Wilson fermions. We start with $N_{t}=12$ and 16 lattices and pion masses of 600 to 450 MeV, aiming at chiral and continuum limits with light quarks.
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References
How the literature uses it
9 arXiv papers cite this in 19 sentences
Papers citing it · 15 sentences without a confident label
Builds on it 1 paper
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Here we present an update of our study [ref] concerning the order of the transition in the chiral limit of the two-flavour theory with non-perturbatively $O(a)$ improved Wilson fermions.
QCD thermodynamics with O(a) improved Wilson fermions at Nf=2 · Introduction · 0.94
Uses its method or tool 1 paper
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This method enables us to get a fine resolution around the critical temperature, in contrast to the fixed scale approach, and to use the modified Multi-Histogram method as introduced in [ref] .
Towards the N_f=2 deconfinement transition temperature with O(a) improved Wilson fermions: An update · Setup of the simulations · 1.00
Compares with it 1 paper
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We have, however, checked the agreement with the results for the unsmeared Polyakov loop explicitly (see also [ref] ).
On the strength of the $U_A(1)$ anomaly at the chiral phase transition in $N_f=2$ QCD · Polyakov loops · 0.96
What it cites · 8 sentences without a confident label
Uses the method or tool of 2 papers
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Here we use the deflation accelerated DDHMC algorithm, introduced by Lüscher [ref] .
Schwarz-preconditioned HMC algorithm for two-flavour lattice QCD · Lattice action and update algorithm · 1.00
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One scheme to locate the transition is used by the QCDSF-DIK collaboration: they cross the transition point by varying the hopping parameter $κ$, which is related to the bare quark mass, while keeping the lattice coupling $β$ fixed [ref] .
Probing the finite temperature phase transition with Nf=2 nonperturbatively improved Wilson fermions · Observables and strategy · 0.86
Uses data or values from 2 papers
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Fortunately there already exists a run for $T=0$ with the parameters $β=5.50$ and $κ=0.13650$ [ref] , leading to a transition temperature in physical units of roughly $T_c(m_π= 457 MeV,a=0.060 fm)≈206$ MeV.
Mesonic and baryonic correlation functions at fine lattice spacings · Simulation results · 0.97
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Scan $A$ was performed by setting the hopping parameter $κ$ to the value where the transition in the real part of the Polyakov loop was observed for $β=5.29$ in [ref] .
Probing the finite temperature phase transition with Nf=2 nonperturbatively improved Wilson fermions · Simulation results · 0.97
Compares with 1 paper
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By direct comparison, we see that the resulting transition temperature is slightly higher than the one obtained in [ref] .
Probing the finite temperature phase transition with Nf=2 nonperturbatively improved Wilson fermions · Simulation results · 1.00
Cites as background 1 paper
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The long-standing controversy about the validity of rooting (see e.g. [ref] ) is on-going.
Theoretical issues with staggered fermion simulations · Introduction · 0.96
Discussion
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